How does the "tail" command's "-f" parameter work?
From the tail(1) man page: With --follow (-f), tail defaults to following the file descriptor, which means that even if a tail’ed file is renamed, tail will continue to track its end. This default behavior is not desirable …
Show tail of files in a directory? - Unix & Linux Stack Exchange
A simple pipe to tail -n 200 should suffice. Example Sample data. $ touch $(seq 300) Now the last 200: $ ls -l | tail -n 200 You might not like the way the results are presented in that list of 200. For that you …
What is the difference between "tail -f" and "tail -F"?
Tail will then listen for changes to that file. If you remove the file, and create a new one with the same name the filename will be the same but it's a different inode (and probably stored on a different place …
Why can't I do two greps after a tail? - Unix & Linux Stack Exchange
2022年12月22日 · tail -f file prints the last 10 lines that were initially in the file and waits and prints all the additional lines that come thereafter. To print all the initial lines and all following, use tail -n +1 -f file.
logs - How to tail -f multiple files and grep each file individually in ...
2023年12月17日 · How to tail -f multiple files and grep each file individually in single output? Ask Question Asked 2 years, 2 months ago Modified 2 years, 2 months ago
`tail -f` until text is seen - Unix & Linux Stack Exchange
tail -f my-file.log | grep -qx "Finished: SUCCESS" -q, meaning quiet, quits as soon as it finds a match -x makes grep match the whole line For the second part, try tail -f my-file.log | grep -m 1 "^Finished: " | …
Pass the output of tail -f to a script - Unix & Linux Stack Exchange
2023年12月29日 · tail -n +1 -f myFile Some versions of tail also accept a numeric option directly, like tail -5 or tail +5, but that is non-POSIX. The output from tail to a pipe will be line-buffered. However, …
How do I read the last lines of a huge log file?
2024年2月20日 · tail --bytes 100M logfile.log | tail However, if you're using GNU Coreutil¹'s tail implementation, that already does this (i.e., it seeks to the end of the file minus 2.5 kB, and looks …
Head/Tail command to grab multiple sets of lines
2023年10月17日 · I have to grab the first two lines, the lines 43 and 44, and the last 2 lines from a file in one conduct of commands. Is there away to print those while only using head, tail and pipe …
How to tail multiple files using tail -0f in Linux/AIX
The point is that tail -f file1 file2 doesn't work on AIX where tail accepts only one filename. You can do (tail -f file1 & tail -f file2) | process to redirect the stdout of both tail s to the pipe to process.